CN112280920A - Method and device for measuring erosion state of blast furnace swinging nozzle - Google Patents
Method and device for measuring erosion state of blast furnace swinging nozzle Download PDFInfo
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- CN112280920A CN112280920A CN202011003856.6A CN202011003856A CN112280920A CN 112280920 A CN112280920 A CN 112280920A CN 202011003856 A CN202011003856 A CN 202011003856A CN 112280920 A CN112280920 A CN 112280920A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
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Abstract
The invention relates to a method and a device for measuring erosion state of a blast furnace swinging nozzle, wherein the method comprises the following steps: measuring the length of the detection tool to obtain a first length; measuring the distance length from the dust removing cover plate to the top of the swing spout to obtain a second length; the lower end of the detection tool extends into the bottommost part of the swing flow nozzle through a measurement hole of the dust removal cover plate, and the length from the upper end of the detection tool to the dust removal cover plate is measured to obtain a third length; respectively subtracting the second length and the third length from the first length to obtain the corrosion depth of the swing spout; according to the invention, the detection tool extends into the bottom of the swing spout, the erosion depth of the swing spout is measured in real time, the erosion state of the swing spout is monitored in time, the safety and controllability of the blast furnace tapping process are ensured, the occurrence of process accidents is avoided, meanwhile, the measurement is convenient and rapid, and the labor and the time are saved.
Description
Technical Field
The invention relates to the technical field of blast furnace iron making, in particular to a method and a device for measuring erosion state of a blast furnace swinging nozzle.
Background
The modern intensified smelting large and medium blast furnace has large tapping quantity, and the traditional mode of a single-track railway iron tapping tank of a casting house is used, so that the length of an iron runner is inevitably long, the tank positions are more, the area of the casting house is also large, the workload of tapping in front of the furnace is large, and the capital construction investment for building the casting house is also increased greatly. Thus introducing an oscillating spout 300. Referring to fig. 2, the swing nozzle is installed under the molten iron runner of the cast house, and functions to convert molten iron flowing from the molten iron runner 400 into one of left and right directions, and to pour the molten iron into a molten iron tank parked on a railway under the cast house platform 100. The outer part of the swing spout is a steel shell, and the inner part of the swing spout is made of refractory castable. The refractory castable in the swing spout needs to bear the impact of the inflow of high-temperature molten iron of an iron runner and the scouring and erosion of the circular flow of the molten iron in the swing spout, when the overflow quantity of the swing spout reaches a certain quantity, the swing spout needs to be inspected in a reinforcing way, and after the refractory castable is eroded to a certain degree, the swing spout is maintained and replaced in time, so that the phenomenon that the swing spout burns through to cause a molten iron underground accident is avoided.
In the prior art, the particularity of a high-temperature molten iron environment exists on the inner side of the swinging spout, and the swinging spout is shielded by the dust removal cover plate, so that the daily inspection of the swinging spout is mainly visually inspected through the observation hole in the dust removal cover plate 200. Because the edge of the swing spout is slagging sometimes, visual inspection is often not in place, the swing spout is easy to corrode too wide and too deep, once the swing spout burns through, accidents of high-temperature molten iron underground and other process accidents, blast furnaces are forced to stop blowing and the like, so that technical and economic indexes of the blast furnaces are influenced, and a large amount of manpower and material resources are consumed.
Disclosure of Invention
The invention aims to provide a method and a device for measuring the erosion state of a blast furnace swinging nozzle, which are used for solving the problem that the erosion condition of the swinging nozzle cannot be clearly known in the prior art, so that a process accident is caused.
The technical purpose of the invention is realized by the following technical scheme: a method for measuring the erosion state of a blast furnace swinging nozzle comprises the following steps:
measuring the length of the detection tool to obtain a first length;
measuring the distance length from the dust removing cover plate to the top of the swing spout to obtain a second length;
the lower end of the detection tool extends into the bottommost part of the swing flow nozzle through a measurement hole of the dust removal cover plate, and the length from the upper end of the detection tool to the dust removal cover plate is measured to obtain a third length;
and respectively subtracting the second length and the third length from the first length to obtain the corrosion depth of the swing spout.
In one embodiment, the detection means comprises a first detection member and a second detection member, the first detection member and the second detection member being cross-connected.
In one embodiment, before the step of measuring the distance from the dust removing cover plate to the top of the oscillating nozzle to obtain the second length, the method further comprises:
measuring the length of the second scale reaching the intersection of the first detecting part and the second detecting part to obtain a fourth length; and measuring the length of the lower end of the detection tool reaching the intersection point of the first detection part and the second detection part, and recording as a fifth length.
In one embodiment, after subtracting the second length and the third length from the first length to obtain the erosion depth of the oscillating nozzle, the method further includes:
and opening the detection tool, moving the detection tool up and down until the angle between the first detection part and the second detection part is maximum, and measuring the width through the second scale to obtain the first width.
In one embodiment, after the opening the detecting means, moving the detecting means up and down until the angle between the first detecting member and the second detecting member is maximum, and measuring the width by the second scale to obtain the first width, the method further includes:
and obtaining a second width which is the corrosion width of the swing spout according to the condition that the ratio of the second width to the fifth width is equal to the ratio of the first width to the fourth width.
In one embodiment, the first detection member and the second detection member are both L-shaped and are arranged oppositely.
An online measuring device for erosion state of a blast furnace swinging nozzle comprises: the system comprises a detection tool, an electronic scale and an automatic calculation module;
the electronic scale is used for measuring the length of the detection tool to obtain a first length; the distance length from the dust removing cover plate to the top of the swing spout is measured to obtain a second length; the device is also used for measuring the length of the upper end of the detection tool reaching the dust removal cover plate when the lower end of the detection tool extends into the bottommost part of the swing flow nozzle through the measurement hole of the dust removal cover plate to obtain a third length;
and the automatic calculation module is used for receiving the first length, the second length and the third length of the electronic scale, and subtracting the second length and the third length from the first length respectively to obtain the corrosion depth of the swing spout.
In one embodiment, the detection means comprises a first detection member and a second detection member, the first detection member and the second detection member being cross-connected.
In one embodiment, the first detection member and the second detection member are both L-shaped and are arranged oppositely.
In one embodiment, the device further comprises a second scale, and the second scale is arranged on the upper side of the detection tool.
In conclusion, the invention has the following beneficial effects: according to the invention, the detection tool extends into the bottom of the swing spout, the erosion depth of the swing spout is measured in real time, the erosion state of the swing spout is monitored in time, the safety and controllability of the blast furnace tapping process are ensured, the occurrence of process accidents is avoided, meanwhile, the measurement is convenient and rapid, and the labor and the time are saved.
Drawings
FIG. 1 is a schematic flow diagram of a method and apparatus for measuring the erosion state of a blast furnace oscillating nozzle;
FIG. 2 is a schematic view of a stokehold oscillating nozzle of a blast furnace oscillating nozzle erosion state measurement method and apparatus;
FIG. 3 is a schematic view of an erosion state measuring apparatus of a blast furnace oscillating nozzle for measuring erosion state of the oscillating nozzle;
in the figure: 100. a cast house platform; 200. a dust removal cover plate; 300. oscillating the spout; 400. tapping a runner; 500. measuring a hole; 600. a probing means; 610. a first detection member; 620. a second detection member; 700. a second scale; 800. and (4) bolts.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
At present, the edge of a swing spout installed below an iron runner of a casting house sometimes forms slag, and the swing spout is easy to corrode too wide and too deep; once the swinging nozzle is burnt through, high-temperature molten iron underground accidents and other process accidents are easily caused, and the blast furnace is forced to stop blowing; not only influencing various technical and economic indexes of the blast furnace, but also consuming a large amount of manpower and material resources.
In view of the above, the invention provides a method for measuring the erosion state of a blast furnace swinging nozzle, which measures the erosion depth and width of the swinging nozzle by a detection tool and a scale; the on-line measurement of the erosion state of the daily swing nozzle needs to hang a dust removal large cover above a molten iron tank by using an overhead traveling crane, then simple measurement is carried out, the swing nozzle is 2 meters below a platform, the height of the platform from the railway ground reaches 15 meters, the operation belongs to high-risk operation, and the particularity of a high-temperature molten iron environment exists, so that the safety of on-line measurement cannot be guaranteed. But the dust removal cover plate is provided with a movable measuring hole, and the erosion state of the swinging nozzle can be measured on line by using a tool to stretch into the dust removal cover plate; the measurement is carried out from the small movable hole on the dust removal cover plate, and the large dust removal cover is hung up differently, so that the high-altitude operation and the high-temperature slag iron approach are avoided, and the safety problem of the online measurement operation is solved; two waste oxygen pipes in front of the blast furnace are used, the lower ends of the oxygen pipes are manufactured into an L shape according to the size of the swing spout, and the upper end of the measuring tool is provided with a movable scale, so that a simple online measuring tool is formed, and the problem of the online measuring tool is solved; a simple tool made of oxygen pipes extends into the swing spout from a measuring hole in the dust removal cover plate for measurement, two oxygen pipes of the measuring tool are crossed, L-shaped tail ends on two sides of the lower end of the measuring tool are in contact with the widest erosion positions on two sides of the swing spout, online measurement is achieved, the erosion width and depth of the swing spout can be measured in real time, the erosion state of the swing spout is monitored in time, and therefore the safety and controllability of the blast furnace tapping process are guaranteed.
Referring to fig. 1, a method for measuring erosion state of a blast furnace swinging nozzle includes the following steps:
100. the length of the probe tool is measured to obtain a first length.
In an embodiment of the invention, the detection means comprises a first detection member and a second detection member, the first detection member and the second detection member being cross-connected.
Specifically, the length of the probe tool is measured, and the length of the probe tool when the first probe member and the second probe member are coincident, that is, the longest length of the probe tool, is measured, and this length is the first length.
200. Measuring the length of the second scale reaching the intersection of the first detecting part and the second detecting part to obtain a fourth length; and measuring the length of the lower end of the detection tool reaching the intersection point of the first detection part and the second detection part, and recording as a fifth length.
In the embodiment of the present invention, the second scale is fixed to the upper side of the first detecting member of the detecting means by a bolt.
300. And measuring the distance length from the dedusting cover plate to the top of the swinging flow nozzle to obtain a second length.
400. The lower end of the detection tool extends into the bottommost part of the swing flow nozzle through a measurement hole of the dust removal cover plate, and the length of the upper end of the detection tool reaching the dust removal cover plate is measured to obtain a third length.
Specifically, a first detection component and a second detection component of the detection tool are closed, a small hole allowing the detection tool to pass through is formed in the dust removal cover plate, the detection tool extends into the bottommost part of the swing spout through the small hole, the detection tool is moved until the lower end of the detection tool reaches the bottommost part eroded by the swing spout, and the length from the upper end of the detection tool to the dust removal cover plate is measured to be the third length.
500. And respectively subtracting the second length and the third length from the first length to obtain the corrosion depth of the swing spout.
In the embodiment of the invention, the corrosion depth of the swing nozzle is an index obtained by adding the corrosion depth to the original depth of the swing nozzle, and the higher the index is, the deeper the corrosion depth of the swing nozzle is, the more serious the corrosion of the swing nozzle is.
600. And opening the detection tool, moving the detection tool up and down until the angle between the first detection part and the second detection part is maximum, and measuring the width through the second scale to obtain the first width.
Specifically, after the corrosion depth of the swing spout is measured, the detection tool is opened and moved up and down until the angle between the first detection part and the second detection part reaches the maximum, and the horizontal distance between the first detection part and the second detection part is measured through the second scale arranged on the first detection part, namely the first width.
In the embodiment of the invention, the first detection part and the second detection part are both rod-shaped parts, and the second width is obtained as the erosion width of the oscillating nozzle according to the condition that the ratio of the second width to the fifth width is equal to the ratio of the first width to the fourth width.
In the embodiment of the invention, the first detection component and the second detection component are both in an L shape, and the first detection component and the second detection component are arranged oppositely; and obtaining the second width which is the corrosion width of the swing spout according to the condition that the ratio of the second width to the fifth width is equal to the ratio of the first width to the fourth width, wherein the corrosion width is a corrosion index, and the higher the corrosion index is, the larger the corrosion width of the swing spout is, the more serious the corrosion of the swing spout is.
In the embodiment of the invention, the state measuring device of the swing spout is installed and realized as follows:
firstly, a movable measuring hole is formed in a dust removal cover plate above a molten iron tank, the diameter of the measuring hole is 100mm, a small cover plate is manufactured on the measuring hole, the small cover plate is opened when online measurement is needed, and the small cover plate is covered after the measurement is finished, so that dust of the dust removal cover is prevented from flying; and the dust removal big cover is hung in different measurement modes, high-altitude operation and high-temperature slag iron approaching are avoided, and the safety problem of online measurement operation is solved.
And secondly, manufacturing a simple online measuring tool, namely manufacturing two waste oxygen pipes in front of the blast furnace, manufacturing the lower ends of the oxygen pipes into L shapes according to the size of the swinging flow nozzle, and arranging a movable scale at the upper end of the measuring tool to form the simple online measuring tool, so that the problem of the online measuring tool is solved.
And thirdly, a simple tool made of oxygen pipes extends into the swinging nozzle from a measuring hole in the dust removal cover plate for measurement, the measuring tool is provided with two crossed oxygen pipes, L-shaped tail ends on two sides of the lower end of the measuring tool are in contact with the widest erosion positions on two sides of the swinging nozzle, online measurement is realized, the erosion width and depth of the swinging nozzle can be measured in real time, and the erosion state of the swinging nozzle is monitored in time, so that the safety and controllability of the tapping process of the blast furnace are ensured.
According to the invention, the detection tool extends into the bottom of the swing spout, the erosion depth of the swing spout is measured in real time, the erosion state of the swing spout is monitored in time, the safety and controllability of the blast furnace tapping process are ensured, the occurrence of process accidents is avoided, the problems that the swing spout burns through, high-temperature molten iron underground accidents occur, other process accidents happen, the blast furnace is forced to stop, and the like are avoided, the technical and economic indexes of the blast furnace are not influenced, the measurement is convenient and fast, and the labor and the time are saved.
Referring to fig. 3, the present invention further provides an online measuring device for erosion state of a blast furnace swinging nozzle, comprising: a detection tool 600, an electronic scale and an automatic calculation module;
the electronic scale is used for measuring the length of the detection tool to obtain a first length; the distance length from the dust removing cover plate 200 to the top of the swing spout 300 is measured to obtain a second length; and the measuring device is also used for measuring the length of the upper end of the detection tool reaching the dust removal cover plate when the lower end of the detection tool extends into the bottommost part of the swing spout through the measuring hole 500 of the dust removal cover plate to obtain a third length.
In an embodiment of the invention, the detection means comprises a first detection member 610 and a second detection member 620, the first detection member and the second detection member being cross-connected.
Specifically, the length of the probe tool is measured, and the length of the probe tool when the first probe member and the second probe member are coincident, that is, the longest length of the probe tool, is measured, and this length is the first length.
Specifically, a first detection component and a second detection component of the detection tool are closed, a small hole allowing the detection tool to pass through is formed in the dust removal cover plate, the detection tool extends into the bottommost part of the swing spout through the small hole, the detection tool is moved until the lower end of the detection tool reaches the bottommost part eroded by the swing spout, and the length from the upper end of the detection tool to the dust removal cover plate is measured to be the third length.
In the embodiment of the present invention, the present invention further comprises a second scale 700, wherein the second scale is arranged on the upper side of the detection tool; measuring the length of the second scale reaching the intersection of the first detecting part and the second detecting part to obtain a fourth length; and measuring the length of the lower end of the detection tool reaching the intersection point of the first detection part and the second detection part, and recording as a fifth length.
In the embodiment of the present invention, the second scale is fixed to the upper side of the first sensing member of the sensing tool by the bolt 800.
And the automatic calculation module is used for receiving the first length, the second length and the third length of the electronic scale, and subtracting the second length and the third length from the first length respectively to obtain the corrosion depth of the swing spout.
In the embodiment of the invention, the corrosion depth of the swing nozzle is an index obtained by adding the corrosion depth to the original depth of the swing nozzle, and the higher the index is, the deeper the corrosion depth of the swing nozzle is, the more serious the corrosion of the swing nozzle is.
And opening the detection tool, moving the detection tool up and down until the angle between the first detection part and the second detection part is maximum, and measuring the width through the second scale to obtain the first width.
Specifically, after the corrosion depth of the swing spout is measured, the detection tool is opened and moved up and down until the angle between the first detection part and the second detection part reaches the maximum, and the horizontal distance between the first detection part and the second detection part is measured through the second scale arranged on the first detection part, namely the first width.
In the embodiment of the invention, the first detection part and the second detection part are both rod-shaped parts, and the second width is obtained as the erosion width of the oscillating nozzle according to the condition that the ratio of the second width to the fifth width is equal to the ratio of the first width to the fourth width.
In the embodiment of the invention, the first detection component and the second detection component are both in an L shape, and the first detection component and the second detection component are arranged oppositely; and obtaining the second width which is the corrosion width of the swing spout according to the condition that the ratio of the second width to the fifth width is equal to the ratio of the first width to the fourth width, wherein the corrosion width is a corrosion index, and the higher the corrosion index is, the larger the corrosion width of the swing spout is, the more serious the corrosion of the swing spout is.
In the embodiment of the invention, the state measuring device of the swing spout is installed and realized as follows:
firstly, a movable measuring hole is formed in a dust removal cover plate above a molten iron tank, the diameter of the measuring hole is 100mm, a small cover plate is manufactured on the measuring hole, the small cover plate is opened when online measurement is needed, and the small cover plate is covered after the measurement is finished, so that dust of the dust removal cover is prevented from flying; and the dust removal big cover is hung in different measurement modes, high-altitude operation and high-temperature slag iron approaching are avoided, and the safety problem of online measurement operation is solved.
And secondly, manufacturing a simple online measuring tool, namely manufacturing two waste oxygen pipes in front of the blast furnace, manufacturing the lower ends of the oxygen pipes into L shapes according to the size of the swinging flow nozzle, and arranging a movable scale at the upper end of the measuring tool to form the simple online measuring tool, so that the problem of the online measuring tool is solved.
And thirdly, a simple tool made of oxygen pipes extends into the swinging nozzle from a measuring hole in the dust removal cover plate for measurement, the measuring tool is provided with two crossed oxygen pipes, L-shaped tail ends on two sides of the lower end of the measuring tool are in contact with the widest erosion positions on two sides of the swinging nozzle, online measurement is realized, the erosion width and depth of the swinging nozzle can be measured in real time, and the erosion state of the swinging nozzle is monitored in time, so that the safety and controllability of the tapping process of the blast furnace are ensured.
According to the invention, the detection tool extends into the bottom of the swing spout, the erosion depth of the swing spout is measured in real time, the erosion state of the swing spout is monitored in time, the safety and controllability of the blast furnace tapping process are ensured, the occurrence of process accidents is avoided, meanwhile, the measurement is convenient and rapid, and the labor and the time are saved.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A blast furnace swinging nozzle erosion state measuring method is characterized in that: the method comprises the following steps:
measuring the length of the detection tool to obtain a first length;
measuring the distance length from the dust removing cover plate to the top of the swing spout to obtain a second length;
the lower end of the detection tool extends into the bottommost part of the swing flow nozzle through a measurement hole of the dust removal cover plate, and the length from the upper end of the detection tool to the dust removal cover plate is measured to obtain a third length;
and respectively subtracting the second length and the third length from the first length to obtain the corrosion depth of the swing spout.
2. The method for measuring the erosion state of the blast furnace oscillating nozzle according to claim 1, wherein: the detection tool comprises a first detection component and a second detection component, and the first detection component and the second detection component are connected in a cross mode.
3. The method for measuring the erosion state of the blast furnace oscillating nozzle according to claim 1, wherein: the distance length that the dust removal apron reachs swing stem apex of flow is measured, before obtaining the second length, still includes:
measuring the length of the second scale reaching the intersection of the first detecting part and the second detecting part to obtain a fourth length; and measuring the length of the lower end of the detection tool reaching the intersection point of the first detection part and the second detection part, and recording as a fifth length.
4. The method for measuring the erosion state of the blast furnace oscillating nozzle according to any one of claims 2 or 3, characterized in that: after the second length and the third length are respectively subtracted from the first length to obtain the erosion depth of the oscillating nozzle, the method further comprises the following steps:
and opening the detection tool, moving the detection tool up and down until the angle between the first detection part and the second detection part is maximum, and measuring the width through the second scale to obtain the first width.
5. The method for measuring the erosion state of the blast furnace oscillating nozzle according to claim 4, wherein: the opening detection tool, when reciprocating detection tool and when the angle between first detecting part and the second detecting part is the biggest, measure the width through the second scale, after obtaining first width, still include:
and obtaining a second width which is the corrosion width of the swing spout according to the condition that the ratio of the second width to the fifth width is equal to the ratio of the first width to the fourth width.
6. The method for measuring the erosion state of the blast furnace oscillating nozzle according to claim 2, characterized in that: the first detection component and the second detection component are both L-shaped and are arranged in a back-to-back mode.
7. The utility model provides a blast furnace swing spout erosion state on-line measuring device which characterized in that: the method comprises the following steps: the system comprises a detection tool, an electronic scale and an automatic calculation module;
the electronic scale is used for measuring the length of the detection tool to obtain a first length; the distance length from the dust removing cover plate to the top of the swing spout is measured to obtain a second length; the device is also used for measuring the length of the upper end of the detection tool reaching the dust removal cover plate when the lower end of the detection tool extends into the bottommost part of the swing flow nozzle through the measurement hole of the dust removal cover plate to obtain a third length;
and the automatic calculation module is used for receiving the first length, the second length and the third length of the electronic scale, and subtracting the second length and the third length from the first length respectively to obtain the corrosion depth of the swing spout.
8. The on-line measuring device for the erosion state of the blast furnace swinging nozzle according to claim 7, is characterized in that: the detection tool comprises a first detection component and a second detection component, and the first detection component and the second detection component are connected in a cross mode.
9. The on-line measuring device for the erosion state of the blast furnace swinging nozzle according to claim 8, is characterized in that: the first detection component and the second detection component are both L-shaped and are arranged in a back-to-back mode.
10. The on-line measuring device for the erosion state of the blast furnace swinging nozzle according to claim 7, is characterized in that: still include the second scale, the second scale is located the upside of detecting the instrument.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011003856.6A CN112280920A (en) | 2020-09-22 | 2020-09-22 | Method and device for measuring erosion state of blast furnace swinging nozzle |
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| CN202011003856.6A CN112280920A (en) | 2020-09-22 | 2020-09-22 | Method and device for measuring erosion state of blast furnace swinging nozzle |
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| CN202011003856.6A Pending CN112280920A (en) | 2020-09-22 | 2020-09-22 | Method and device for measuring erosion state of blast furnace swinging nozzle |
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| US4103539A (en) * | 1977-02-07 | 1978-08-01 | Exxon Research & Engineering Co. | Non-destructive refractory erosion indicator |
| CN201162018Y (en) * | 2008-03-14 | 2008-12-10 | 宝山钢铁股份有限公司 | Blast furnace principal sulcus liquid level difference measuring apparatus |
| CN102252577A (en) * | 2011-04-22 | 2011-11-23 | 通达耐火技术股份有限公司 | Device and method for measuring thickness of high-temperature resistant iron runner refractory material |
| CN202193800U (en) * | 2011-08-08 | 2012-04-18 | 新疆八一钢铁股份有限公司 | Special tool for measuring size of hearth |
| CN203625407U (en) * | 2013-11-20 | 2014-06-04 | 宝山钢铁股份有限公司 | Device for measuring level height difference of main ditch head and deslagging hole bottom of blast furnace |
| CN104141023A (en) * | 2013-05-10 | 2014-11-12 | 宝山钢铁股份有限公司 | Blast furnace slag and iron runner height difference measuring apparatus and method thereof |
| CN206803899U (en) * | 2017-05-04 | 2017-12-26 | 江苏江南铁合金有限公司 | Intermediate frequency furnace lining thickness detection apparatus |
| CN208125014U (en) * | 2018-03-08 | 2018-11-20 | 长沙金铎机械有限公司 | Inboard wall of burner hearth measuring device |
-
2020
- 2020-09-22 CN CN202011003856.6A patent/CN112280920A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4103539A (en) * | 1977-02-07 | 1978-08-01 | Exxon Research & Engineering Co. | Non-destructive refractory erosion indicator |
| CN201162018Y (en) * | 2008-03-14 | 2008-12-10 | 宝山钢铁股份有限公司 | Blast furnace principal sulcus liquid level difference measuring apparatus |
| CN102252577A (en) * | 2011-04-22 | 2011-11-23 | 通达耐火技术股份有限公司 | Device and method for measuring thickness of high-temperature resistant iron runner refractory material |
| CN202193800U (en) * | 2011-08-08 | 2012-04-18 | 新疆八一钢铁股份有限公司 | Special tool for measuring size of hearth |
| CN104141023A (en) * | 2013-05-10 | 2014-11-12 | 宝山钢铁股份有限公司 | Blast furnace slag and iron runner height difference measuring apparatus and method thereof |
| CN203625407U (en) * | 2013-11-20 | 2014-06-04 | 宝山钢铁股份有限公司 | Device for measuring level height difference of main ditch head and deslagging hole bottom of blast furnace |
| CN206803899U (en) * | 2017-05-04 | 2017-12-26 | 江苏江南铁合金有限公司 | Intermediate frequency furnace lining thickness detection apparatus |
| CN208125014U (en) * | 2018-03-08 | 2018-11-20 | 长沙金铎机械有限公司 | Inboard wall of burner hearth measuring device |
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Application publication date: 20210129 |